Improvement in sketching-albums



L. E. M. BURR.

SKETCHIITG ALBUM.

No 185,818. Patented Jan. 2, 187 7.

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Wihzwaes. 1727x7220).

MFETERS, PHOTO-LITHOGRAFHER, WASHINGTON. n C.

.margin of the cover.

UNITED STATES PATENT OFFICE.

LAURA E. MONTGOMERY BURR, OF LANSING, MICHIGAN.

IMPROVEMENT -IN SKETCHlNG-ALBUMS.

Specification forming part of Letters Patent No. 185,818, dated January2, 1877 application filed September 14, 1875.

To all whom it may concern:

- Be it known that I, LAURA E. MONTGOM- ERY BURR, of the city ofLansing, in Ingham county, in the State of Michigan, have invented a newand useful Apparatus to Facilitate Outline and Perspective Drawing, andfor Copying Pictures; and 1 do hereby declare the following to be afull, clear, and exact description of the same, reference being had tothe accompanying drawing, making a part of this specification, in which-Figure 1 represents this apparatus when closed and in its portableshape, in which it resembles a book having either a muslin or leatherbinding. Fig. 2' is a perspective view of the same, a b c (I beingplates of ground glass:

' a and b are attached like the leaves of a book, and havetheinroughened sides toward the left hand. 0 and d adhere firmly to theinner surfaces of the covers. E is a plate of stained glass, ofgolden-brown color, firmly held by the metallic clampf, Fig. 3, to whichthe double hinge g is so attached as to enable the glass E to swingeither horizontally or vertically upon the left-hand cover, to which itis attached by the clamp h, which clasps the The lower margins of theseplates are precisely parallel, so that when resting on a level surfaceeach plate stands erect and firm.

The method of using this apparatus consists in tracing the outline ofthe objects to be drawn, as seen reflected from the plate E upon one ofthe plates at c d, it being properly adjusted behind the glass E, andusing either black or white crayon.

. Both the apparatus and head must remain immovable during the briefoperation of taking anoutline sketch. The true position of the objectsdrawn will be found on the reverse side of the glass, and may readily becopied onto canvass or paper.

As the scale of the picture depends upon the distance between the glassE and the ground-glass surface, a separate and larger plate of groundglass, placed upon an easel in range with the glass E, may be used whena larger outline is desired.

I am aware that the principle of my invention,'as a means offacilitating the copying of objects from nature by unskillful persons,as illustrated, for instance, in the simplest form of the camera lucida,is already known, and such I do not claim as my invention, whichconsists, mainly, in special construction and the embodiment of theoperative elements in book form.

What I claim is- 1. The sketching-album, composed essentially of thecovers 0 d, the glass reflector E, and the sketching-surfaces a b,combined and arranged in book form, substantially as described, and forthe purpose set forth.

2. In combination with the sketching-album, constructed as described,the double-hinge attachment g, substantially as and for the purpose setforth.

LAURA E. MONTGOMERY BURR.

Witnesses:

M. (JoNNoLLY, A. A. CoNNoLLY.

